6686224226866 has 8 divisors (see below), whose sum is σ = 10029348259884. Its totient is φ = 3343108140240.

The previous prime is 6686224226833. The next prime is 6686224226897.

It is a happy number.

6686224226866 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 6355919999025 + 330304227841 = 2521095^2 + 574721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6686224226798 and 6686224226807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037836 + ... + 3801256.

Almost surely, 2^{6686224226866} is an apocalyptic number.

6686224226866 is a deficient number, since it is larger than the sum of its proper divisors (3343124033018).

6686224226866 is a wasteful number, since it uses less digits than its factorization.

6686224226866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973196.

The product of its digits is 191102976, while the sum is 64.

The spelling of 6686224226866 in words is "six trillion, six hundred eighty-six billion, two hundred twenty-four million, two hundred twenty-six thousand, eight hundred sixty-six".